Dell PowerVault 715N (Rackmount NAS Appliance) - Manual (Page 18)

4. If the problem is not resolved, turn off the system and any device connected to the serial port.
5. Ensure that you use a null modem serial cable.
6. Swap the cable with a known working cable.
7. Turn the client system on, and then turn on the appliance.
If the problem is resolved, the interface cable must be replaced. See " Getting Help " for information about obtaining
technical assistance.
Troubleshooting the Integrated NIC
NOTE: Parts of this procedure require you to use the console redirection function on the serial port. See your
Administrator's Guide for information about connecting to the system through console redirection.
Problem
NIC cannot communicate with the network.
Action
NOTE: The system takes approximately 5 minutes to fully boot. Ensure that the system has had adequate time to
boot before performing any troubleshooting procedures.
1. Ensure that you use an Ethernet cable and not the crossover cable that came with your system.
2. Enter the BIOS Setup utility and confirm that the NIC is enabled.
See "Using the BIOS Setup Utility" in the User's Guide for instructions.
3. Check the two indicators on the left and right corners of the NIC connector on the system's back panel (see
Figure 4-4 ).
The green link indicator shows that the adapter is connected to a valid link partner. The amber activity indicator
lights if the system sends or receives network data.
If the link indicator is not on, check all cable connections.
Change the auto-negotiation setting, if possible.
Try another port on the switch or hub.
4. If the activity indicator does not light, the network driver files might be damaged or deleted.